IMS端到端网络质量与用户感知研究

发布时间：2018-11-25 08:39

【摘要】：随着通信市场的发展,IMS已成为运营商新一代核心网络之一,其用户规模及市场需求越来越大。但由于IMS网络主要基于IP承载,其链路不可控和“尽力而为”的传输服务方式均极大地影响了网络质量和用户业务使用感知。因此,如何将IMS网络质量与用户感知体验关联,建立一套行之有效的IMS端到端用户感知评估方法已成为目前亟需解决的课题。本文首先从IMS组网结构入手,着重分析了当前IMS网络质量和用户感知情况。针对现网存在的问题,分析和比较了评估IMS网络质量和用户感知的几种方法,进而提出了基于KQI的网络质量与用户感知评估优化方案,1)构建IMS信令流程评估参数,优化提升端到端信令接续成功率,减少业务使用失败造成的用户感知问题;2)构建IMS语音质量评估参数,优化提升端到端语音质量,减少通话质量不佳造成的用户感知问题。该方案已应用于工程实践,有效改善了网络质量和用户感知。
[Abstract]:With the development of communication market, IMS has become one of the new generation core networks of operators. However, because the IMS network is mainly based on IP, the uncontrollable link and "best effort" transmission mode greatly affect the network quality and user service usage perception. Therefore, how to correlate IMS network quality with user perception experience and establish a set of effective IMS end-to-end user perception evaluation method has become a problem that needs to be solved. This paper begins with the structure of IMS network, and analyzes the current IMS network quality and user perception. Aiming at the problems existing in the present network, this paper analyzes and compares several methods of evaluating IMS network quality and user perception, and then puts forward an optimized scheme of network quality and user perception evaluation based on KQI. 1) constructing the evaluation parameters of IMS signaling process. Improve the success rate of end-to-end signaling to reduce the problem of user perception caused by service failure; 2) constructing the IMS voice quality evaluation parameters, optimizing the end-to-end speech quality and reducing the problem of user perception caused by poor call quality. This scheme has been applied to engineering practice and has effectively improved network quality and user perception.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN919.8

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